Senior Quantity Surveyor - Nuclear Decommissioning

About the role

Amentum is a delivery partner within the Decommissioning and Nuclear Waste Partners (DNWP) Framework, a major Sellafield programme worth up to £4.6 billion and running for up to 15 years, focused on safely accelerating decommissioning, remediation and high hazard risk reduction. The nuclear team supports front-end design, engineering, technical leadership and delivery. As a Senior Quantity Surveyor you will support the Principle Commercial Manager(s) and programme leads in delivering Contract Management Plans and maintaining relationships with clients, contractors, subcontractors, suppliers and service providers, ensuring robust cost management, contract administration and commercial governance.

Key responsibilities

• Support subcontract engagement and support cost estimation, budgeting and forecasting across decommissioning projects
• Administer contracts (e.g. NEC3/4), including change control, payment applications and final accounts
• Support procurement and tendering with accurate cost data and commercial input
• Manage the contract Risk Register, attend risk reduction meetings, manage Early Warning Notices and Compensation Events, and handle CEMAR administration
• Monitor and report on project financial performance, identifying risks and opportunities
• Ensure compliance with regulatory and governance frameworks, including NDA and ONR requirements
• Engage with project teams, suppliers and stakeholders, and contribute to continuous improvement and lessons learned

Required profile

• Degree-level qualification in a relevant discipline or equivalent experience in commercial/contract management
• MRICS or recognised equivalent professional membership (consideration given if the process has started with a detailed plan)
• Proven experience as a Senior Quantity Surveyor in a regulated sector
• Experience in a highly regulated, quality-assured system where design and engineering were central
• Record of successful delivery, including influencing professional engineers on engineering work packages
• Strategic guidance based on knowledge of projects across a portfolio

Required skills

• Strong knowledge of NEC3 and NEC4 contracts and public sector procurement regulations
• Cost management, contract administration and commercial reporting
• Excellent stakeholder engagement and communication skills
• Proficiency in MS Office, especially MS Excel